import router from './router';
import store from './store';
import { Message } from 'element-ui';
import NProgress from 'nprogress'; // progress bar
import 'nprogress/nprogress.css'; // progress bar style
import { getToken } from '@/utils/auth'; // get token from cookie
import getPageTitle from '@/utils/get-page-title';
import i18n from "@/locale";

NProgress.configure({ showSpinner: false }); // NProgress Configuration

const whiteList = ['/login', '/auth-redirect']; // no redirect whitelist

router.beforeEach(async (to, from, next) => {
    console.log("获取token");

    // start progress bar
    NProgress.start();
    // set page title

    document.title = getPageTitle(i18n.t(to.meta.title));
    // determine whether the user has logged in
    const hasToken = getToken();

    if (hasToken) {
        if (to.path === '/login') {
            // if is logged in, redirect to the home page
            next({ path: '/' });
            NProgress.done();
        } else {
            // determine whether the user has obtained his permission roles through getInfo
            const hasRoles = store.getters.roles && store.getters.roles.length > 0;
            if (hasRoles) {
                next();
            } else {
                try {
                    // get user info
                    // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
                    const { roles } = await store.dispatch('user/getInfo');
                    // generate accessible routes map based on roles
                    const accessRoutes = await store.dispatch('permission/generateRoutes', roles);

                    // dynamically add accessible routes
                    router.addRoutes(accessRoutes);

                    // hack method to ensure that addRoutes is complete
                    // set the replace: true, so the navigation will not leave a history record
                    next({ ...to, replace: true });
                } catch (error) {
                    // remove token and go to login page to re-login
                    await store.dispatch('user/resetToken');
                    Message.error(error || 'Has Error');
                    next(`/login?redirect=${to.path}`);
                    NProgress.done();
                }
            }
        }
    } else {
        /* has no token*/

        if (whiteList.indexOf(to.path) !== -1) {
            // in the free login whitelist, go directly
            next();
        } else {
            // other pages that do not have permission to access are redirected to the login page.
            next(`/login?redirect=${to.path}`);
            NProgress.done();
        }
    }
});

router.afterEach(() => {
    // finish progress bar
    NProgress.done();
});
